Hello Ilya,
> Have you set your crush tunables to hammer?

I've set crush tunables to optimal (therefore I guess they got set
to hammer).


> 
> Your crushmap has straw2 buckets (alg straw2).  That's going to be
> supported in 4.1 kernel - when 3.18 was released none of the straw2
> stuff existed.
I see.. maybe this is a bit too radical setting for "optimal" preset?

> 
> You should be able to change "alg straw2" to "alg straw" and that
> should make it work with 3.18 kernel.
It indeed helped! Thanks!

BR

nik



> 
> Thanks,
> 
>                 Ilya
> 

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